The meta point of the post is it's dumb to attach too much weight to cultural signifiers that are easy for people to imitate once they know about them.

The top voted comment on the post invents a new cultural signifier, and declares that candidates who fail it should be disqualified! It would be funny if it wasn't a pervasive interviewing practice.

which is a totally unproductive red herring to the goal getting on someone else's payroll and insurance program

avoiding someone you would probably never see on the job is not a silver lining